The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2014
Filed:
Nov. 27, 2008
Fabiana Fantinel, Frankfurt, DE;
Shahram Mihan, Bad Soden, DE;
Isabella Camurati, Ferrara, IT;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A copolymer of ethylene, a catalyst system suitable to prepare the copolymer, and a process to prepare such copolymer are described. The copolymer comprises from 60 to 80% by weight of ethylene and from 20 to 40% by weight of at least one first α-olefin comonomer having n carbon atoms and at least one second α-olefin comonomer having (n−1) carbon atoms, n being from 4 to 13, has a polydispersity M/Mequal to or lower than 3.5, and a density from 0.855 to 0.880 g/cm. The copolymer is obtained by subjecting ethylene and said at least one first α-olefin comonomer to a polymerization stage in the presence of a catalyst system capable of forming a copolymer of ethylene and said at least one first α-olefin comonomer having n carbon atoms, while forming the second α-olefin comonomer having (n−1) carbon atoms.